A police officer from the north central region's Nghe An Province was found dead in a local river Monday, but the cause of death is unknown.
The body of lieutenant Nguyen Thai Son was found in the Hoang Mai River two days after his family reported him missing.
Son was wearing a T-shirt and short pants, news website Dan Tri reported.
Police said Son had called home on Saturday and told his family he would visit soon.
The family had failed to contact him since.
Son was working at a national prison in Nghe An Province.
Police are still investigating the cause of death, which remains unclear.